1. • Relative humidity and temperature measurement
• Dew Point and other psychrometric calculations
• Interchangeable probe for easy maintenance
• Wide choice of probes to satisfy every application
• Low voltage and mains versions
• Freely scalable analogue signals
• Various digital outputs available
• Housing of aluminium/ABS
THE INTELLIGENT
TRANSMITTER.
INTRODUCING AIRCHIP DIGITAL TECHNOLOGY.
INNOVATION IN HUMIDITY
AND TEMPERATURE MEASUREMENT
TRANSMITTERS FOR HUMIDITY AND TEMPERATURE
Tel: +44 (0)191 490 1547
Fax: +44 (0)191 477 5371
Email: northernsales@thorneandderrick.co.uk
Website: www.heattracing.co.uk
www.thorneanderrick.co.uk

2. The HygroFlex5-series is the latest development in transmitters for humidity, temperature and dew point.
One outstanding feature of this innovative product is the possibility to output any psychrometric calculation as
an analogue signal.
The HF5-series is compatible with HygroClip2 probes with integrated AirChip3000 technology – thanks to which
the probes achieve an unparalleled degree of accuracy not seen before.
In combination with advances in sensor technology and integration, the HygroFlex HF52, HF53, HF54, HF55 and
HF56 transmitters combined with a HC2-S probe provide superb precision and state-of-the-art functionality,
taking humidity and temperature measurement to a whole new level of accuracy < 0.8 %rh and < 0.1 K at 23 °C.
SPECIFY THE BEST:
HYGROFLEX5 ADVANTAGES AT A GLANCE.
Easy to read display
• Display of the measured values on a clear,
backlit graphic display with trend indicators
• Configuration by keypad possible
Wide selection of probes
• Compatible with all HygroClip2 probes
• Use of probe simulators allows easy system validation
Output signals
• Two freely selectable and scalable analogue outputs
• Available as 2-wire (HF52), 3/4-wire (HF53)
3/4-wire (HF54, HF56 with galvanic isolation)
and digital (HF55) transmitter
• Optional digital outputs allow integration on a network
via or RS-485, Ethernet - wired or wireless
• Combined digital and analogue output signals,
allow control and monitoring of a device with one transmitter
Tried-and-tested housing
• Robust industrial housing
• Wall or duct mount versions
AirChip3000
• Compensates humidity and temperature over 30,000 reference points
• Dew/frost point calculation
• Active alarming and information
• ASIC (Application Specific Integrated Circuit), micro-controller and EEPROM on one chip
Power supply
• 15...40 VDC/12...28 VAC
• 9...36 VDC/7...24 VAC (galvanically separated)
• 85...240 VAC (galvanically separated)
• Power over Ethernet (PoE)

3. Interested in further information about the right choice of probe (special applications, order codes)?
A complete and up-to-date overview of all probe options is available on our web site www.rotronic.com.
APPLICATIONS.
The HygroFlex5-series is ideal for all applications where exact measurement of humidity and temperature is of decisive importance,
for example the food and pharmaceutical industries, printing and paper industries, meteorology, agricultural sector, archaeology
and climatology. There is hardly a field today in which these parameters may be ignored. It is ultimately the measuring task at hand
that defines the combination of transmitter and probe that best covers your needs.
PROBES FOR
HYGROFLEX TRANSMITTERS.
Whether you need a simple plug-in probe to measure ambient conditions, or a more sophisticated cable probe for high temperature
and other special applications, we can provide you with the ideal HygroClip2 probe to suit your requirements.
All HygroClip2 probes can be individually calibrated and adjusted to increase measurement precision where you need it the most.
This capability is exactly what makes every probe in the product range a high-end solution for your application.
Standard Probe
Operating range: - 50...100 °C
Housing: polycarbonate or stainless steel
Industrial Probes for process applications(1)
Operating range: -100…200 °C and 0...100 bar (0...1450 PSI)
Variations: polycarbonate or stainless steel
(1): HF520 transmitter is not compatible with industrial metal probes
HF5 duct version
HF5 wall version
HF56 seriesHF53S/54S/55S series HF52/53/54/55 series

4. TECHNICAL INFORMATION.
Interested in further information (special applications, order codes)? A complete and up-to-date overview of our HygroFlex5-series is available
on our web site www.rotronic.com.
HF52 HF53/54/56 HF55
2-wire 3/4-wire Digital
Probe type HygroClip2 probe, all models(1)
Probe cable extension Passive: max. 5 m, active 100 m
Accuracy at 23 ±5 °C probe dependent
Response time τ63 probe dependent
Start-up HF53/54/55/56: typically 3s, HF52: 10s
Measurement range probe dependent
Electronics operating range HF53/54/55/56: -40…60°C / 0…100 %rh
HF52: -25...60 °C
(-10…60 °Cwith LCD)
Display (option) Graphic display, backlit
(HF52: no backlight) Parameters configurable
Trend indicators Yes
Output signals (analogue) Scalable by user
0...1 V, 0...5 V, 0...10 V, 0(4)...20 mA
Digital outputs (optional) Ethernet (LAN, WLAN), USB, RS-485
Power supply HF52: 10...28 VDC: 10 V+(0.02x load)
HF53/55: 15…40 VDC /12…28 VAC
HF54 with galvanic isolation: 9...36 VDC
HF56 with galvanic isolation: 85...240 VAC
Power consumption HF52: max 40 mA
HF53 <100mA, HF55 <300mA
Circuit type HF52: 2 x 2 wires, HF53/54/56: 3/4 wires
HF55: digital
Min. / Max. load V-signal: ≥1 kΩ/V / mA-signal: ≤500 Ω
Load compensation Yes
Firmware update Via service connector, requires HW4 software
Sensor diagnostics (drift, state) Programmable. Default: off
Humidity adjustment With keypad/software: multi point(HF53/54/55/56)
Temperature adjustment With keypad: 1 point
Software: 2 points (HF53/54/55/56)
Data logging function External, 2000 data point memory
Psychrometric calculations All selectable
PC interface With ROTRONIC interface cable HW4 compatible
Data processing by HW4 Graphs,statisticaldataandanalysis,qualificationetc.
Housing material ABS / Aluminium (HF5xxS)
Cable connections 1 x M16x1.5, on terminals
Standards CE- compliant, 2007/108/EG
Audit trail, Electronic Records FDA 21 CFR Part 11 and GAMP compliant
IP protection rating & fire IP65 / Corresponds to UL94-HB protection class
(1): HF520 transmitter is not compatible with industrial metal probes
Change over now to the HygroFlex5 transmitter and HygroClip2 probes with the integrated AirChip3000
for your humidity and temperature measurement needs. You can find detailed information about our
probes at www.rotronic-humidity.com. We would also be happy to advise you in person or on the phone.
Wall version (W) Duct version (D)
HF52/53/54/55 Series
HF56 Series
HF53S /54S/55S Series
160
110
210
100
25
160
30
25
30
25
61
Tel: +44 (0)191 490 1547
Fax: +44 (0)191 477 5371
Email: northernsales@thorneandderrick.co.uk
Website: www.heattracing.co.uk
www.thorneanderrick.co.uk